Re: Can prefetch_related() look up reverse relationship?

That's awesome, thanks for sharing!

-Jamie

On Tue, Feb 7, 2012 at 7:55 AM, Jonathanz <tianissimo@gmail.com> wrote:

I found it! The correct query shoud be

Book.objects.all().prefetch_related('price_set')

On Feb 7, 5:38 pm, Jonathanz <tianiss...@gmail.com> wrote:
> I'm using django1.4 from svn trunk.
> The models are as follows:
>
> class Book(models.Model):
>     # some stuff
>
> class Price(models.Model):
>     book = models.ForgeinKey(Book)
>
> Each book can have many prices.
>
> My query in view:
> Book.objects.all().prefetch_related('price')
>
> I got this error:
> Cannot find 'price' on Book object, 'price' is an invalid parameter to
> prefetch_related()
>
> Am I missing something? or prefetch_related cannot handle reverse
> lookup.
>
> Thanks in advance.

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